Clement+and+Adam

=**Background research**= Now contains many more slides!!

For Full details on an iron analysis experiment with procedure and everything, meant to be performed in an educational institution lab setting check the word doc. link. [][]

http://www.infrastructure.alberta.ca/Content/docType306/Production/TechPres01.pdf

http://www.freedrinkingwater.com/ro-45-detail.htm Reverse osmosis prices.

. Reverse osmosis systems differ in the number of stages (3, 4, or 5 stage) but all will produce high quality water. All reverse osmosis systems require regular pre-filter and membrane replacement in order to ensure a high quality and quantity of water production.

http://www.purityplanet.com/water-softeners/water-softener-types/ion-exchange-water-softeners/ Cation exchange info

http://www.hardwater.org/water_treatment.html comparing water treatment

Hard water treated with an ion exchange water softener has sodium added. According to the Water Quality Association (WQA), the ion exchange softening process adds sodium at the rate of about 8 mg/liter for each grain of hardness removed per gallon of water.

For example, if the water has a hardness of 10 grains per gallon, it will contain about 80 mg/liter of sodium after being softened in an ion exchange water softener if all hardness minerals are removed.

Because of the sodium content of softened water, some individuals may be advised by their physician, not to install water softeners, to soften only hot water or to bypass the water softener with a cold water line to provide unsoftened water for drinking and cooking; usually to a separate faucet at the kitchen sink.

Mechanically softened water is not recommended for watering plants, lawns, and gardens due to its sodium content.